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2.52 <br /> Table 2.16. Runoff Gave Numbers (CN) for Hydrologic Soil Cover Complexessl <br /> Treat-4 Hydrologic Hydrologic soil group <br /> Land use or cover went or condition for <br /> practice infiltrating A B C D <br /> I. Agricultural Use (from USBR, 1777) - <br /> Follow-------------------------- ----•--------- 77 86 91 94 <br /> Row crops---------------------------- SR Poor_-•--__--� 72 81 88 91 <br /> SR- Good---------- 67 78 85 89 <br /> C Poor------------ 70 79 84 88 <br /> C Good______.____ 65 75 82 86 <br /> C3T Poor----------- 66 74 80 82 <br /> C3T Good------------- 62 71 78 81 <br /> Small grain------------------------- SR Poor-----_-____ 65 76 84 88 <br /> SR Good______-_____ 63 75 83 87 <br /> C Poor_-_-______._ 63 74 82 85 <br /> C Good___________ 61 73 81 84 <br /> C3T Poor_•___-_____ 61 72 79 82 <br /> CST Good____________ 59 70 78 81 <br /> Close-.� SR Poor------------- b6 77 85 89 <br /> legumes or SR Good__________. 58 72 81 85 <br /> rotation meadow. C Poor ______--- 64 75 83 85 <br /> C Good----------_ 55 69 78 83 <br /> C&T Poor---------_.- 63 73 80 83 <br /> C3T Good___•_.______ 51 67 76 BD <br /> Posture or Poor_.------___ 68 79 86 89 <br /> Fair_____________ 49 69 79 84 <br /> Good----------... 39 61 74 80 <br /> C Poor------------- <br /> 47 67 81 88 ✓ <br /> C Fair------------- <br /> 25 59 75 83 <br /> C Good_•_•___.____ 6 35 70 79 <br /> Meadow (permanent) _______--- do___----.._ 30 58 71 78 <br /> Moods (form woodlots) ------------ Poor------•----_ 45 6b 77 83 <br /> Fair------------- 36 60 73 79 <br /> Good--------.---- 25 55 70 77 <br /> Farmsteads----------•-------------•- --------------------------------- 59 74 82 86 <br /> Roods (dirt)3(hard surfoce)3 ___�—___ ._...___•._._..._ 72 82 87 89 <br /> 74 84 90 92 <br /> n. Surface Mine use (owe 1981) <br /> Surface facilities <br /> Paved---------------------...----•---- -------- - ------------_ ___.. 98 98 98 98 <br /> Gravel---------- ---------__.-- ------------------- 76 85 89 91 <br /> D ---------------------------------- -------- •---------- -- 72 82 87 89 <br /> Disturbed area (active 72 81 88 91 <br /> Reclaimed 39- 61- 74- 80- <br /> (with vegetated cover) 72 81 88 91 <br /> Notes: <br /> 1. Theme CN values are for antecedent moisture condition II (AMC-II). To find the proper CN <br /> for AW-III or AMC-I. use the CN from this table in Table. <br /> 2. Close-drilled or brood cost. <br /> 3. Including right-of-way. <br /> f <br />